<template>
  <div>
    <nav-bar>
        <div slot="left" class="back" @click="backClick">
            <img src="~assets/img/common/back.svg" alt="">
        </div>
        <div slot="center" class="titles">
        <div v-for="(item,index) in titles" class="titles-item" 
        :class="{active: index === currentIndex}"
        @click="titleClick(index)">{{item}}</div>
        </div></nav-bar>
  </div>
</template>

<script>
import NavBar from 'components/common/navbar/NavBar'

export default {
    name:"DetailNavBar",
    components:{
        NavBar
    },
    data(){
        return {
            titles: ['商品','参数','评论','推荐'],
            currentIndex:0
        }
    },
    methods:{
        titleClick(index){
            this.currentIndex = index;
        },
        backClick(){
            this.$router.back()
        }
    }
}
</script>

<style>
.titles {
    display: flex;
    font-size: 13px;
}
.titles-item {
    flex: 1;
}
.active {
    color: var(--color-high-text);
}
.back img{
    margin-top: 12px;
}
</style>